{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["sports team location of teams", "administrative division of country", "country of administrative divisions", "ethnicity of people"], "input": "Duncan also served on the Board of Trustees for Blake School in Minneapolis , Minnesota , and Berkshire School in Sheffield , Massachusetts ."}
{"sports team location of teams": [], "administrative division of country": [], "country of administrative divisions": [], "ethnicity of people": []}